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Work Cited picture #2 How does the sense of smell work? Sequence of events: 1. Smell will enter nose 2. Olfactory receptor neurons will detect the odor. 3. The OFN’s will send the information to the olfactory bulbs. 4. Olfactory bulbs send information to the brain centers, the hippocampus and the amygdala. 5. These limbic system structures influence emotions and memories These brain centers are the ones that perceive odors and access memories. Lionstalkscience. “Smells Ring Bells: How Smells Can Trigger Emotions and Memories.” Lions Talk Science. 08 Oct. 2014. Web. 07 Apr. 2017. Why is the sense of smell so powerful to the human mind? “Psychology and Smell – Fifth Sense.” Fifth Sense. The Fifth Sense. Web. 07 Apr. 2017. Rodriguez-Gil, Gloria. “The Sense of Smell: A Powerful Sense.” The Sense Of Smell: A Powerful Sense. Gloria RodriguezGil, M.Ed., Web. 07 Apr. 2017. Texas A&M. “How Does Memory Work?” ScienceDaily. ScienceDaily. Web. 07 Apr. 2017. “The Smell Report.” The Smell Report – Emotion. Web. 07 Apr. 2017. Wright, Anthony. “Neuroscience Online.” Limbic System: Hippocampus. Anthony Wright. Ph.D. Web. 07 Apr. 2017. picture #1 Ellie Walker E Block picture #5 How does memory work? trigger memories Sequence of events: Neurons can send signals by https://lions-talkusing certain neurotransmitters science.org/2014/10/08/smells-ring The neurons only open their bells-how-smells-can-trigger-emotionssignal channel when they and-memories/ receive stimulation from the same neurotransmitter If the strength of the LTP (long-term potential) is maintained then the memory can be formed The brain is a muscle; you can use it or lose it. The synapses and the pathways between neurons are used they become “strengthened or permanently enhanced”. This is how memory works. If the LTP is maintained, then the longer the memory is maintained. "LTP is the most recognized cellular mechanism to explain memory because it can alter the strength between brain cell connections. If this strength is maintained, a memory can be formed." Dr. William Griffith. http://www.human-memory.net/ http://www.sciencemuseum.org.uk/ whoami/findoutmore/yourbrain/why picture #3 How does the sense of smell trigger emotions & memories? Sequence of events: 1. 2. 3. 4. Smell enters the nose. Olfactory bulb processes smell and sends it to the amygdala and hippocampus. The hippocampus and amygdala process the smell. The smell activates these memory centers and stimulates the limbic system to emit the memory/emotion. picture #4 What are the amygdala and the hippocampus? Amygdala: The center for emotions, emotional behavior, and motivation. The amygdala is connected to the hippocampus. A part of the limbic system. Hippocampus: Regulates emotions and stores memory. Associated mainly with longterm memory. A part of the limbic system. Since olfaction is the only sense that passes through this area of the brain, this is why the sense of smell has such success triggering memories. The amygdala and the hippocampus are both memory and emotion centers in the brain, they are constantly activating emotions and storing memories. These two are so closely linked because the olfactory bulb, where the smell is processed, the amygdala and hippocampus, where the memories are located, are close together and closely connected. The olfactory bulb has a direct line with two different memory centers, the amygdala and the hippocampus. The olfactory bulb has the best chance to provoke those memories, leading to smell being the most powerful sense.